Spring-regulator.



No- 837,557. PATENTED DEC. 4, 1906.

M. GEHRE.

SPRING REGULATOR. APPLICATION FILED JUNB26,1903.

2 SHBBTS8HEET 1.

PATENTED DEC. 4, 1906.

M. GEHRE. SPRING REGULATOR. APPLICATION FILED JUN-326,1903.

2 SHEETS-SHEET 2.

INVENTOR! UNITED STATES PATENT. OFFICE.

MAX GEHRE, or BATH; NEAR DUssELDoRF. GERMANY.

' S PRlNG-RQGULATQ R; Q

Specification of Letters Patent.

Patented Dec. 4,: 190a v Application mm... 26,1903. Serial No. 163,190.

To all whom it may concern: T Be it knownthat I, MAX Gemznresiding at Bath, near Dusseldorf, Germany, have invented certain'new and useful Improvements n Spring-Regulators, of which the following is a specification.

The resent invention-relates to improvements in the construction of apparatus for measuring the quantity of steam passing through a contracted opening bored into a plate provided between the flanges connect- -mg two adjacent parts of a steam-conduit pi e. I

at is a well-known fact that if the pressure of steam at one side of such opening remains at the same he1 ht while the pressure at the other side of t e opening continuously increases, the quantities of steam passing through said ope do not increase 1n the same degree as tl i d difierence between both pressures rises. In other words, a spring bemg bent or stretched b the pressure contin- "uously increasing coul not be used for moving or turning an indicating-lever over a umformly-graduated scale, because such spring would be bent or stretched quite in accord-- ance as the steam-pressure increases, while,

, as alread mentioned, the quantity of steam passing t ough does not increase in accordance withthe' difierence of the pressure. The particular object of thepresent invention is now accomplished by anarrangement or device by which the spring over'ning the position of the indicatingever, which itself- -serves to show on a scale the quantity of steam passing through the aforesaid co'ntracted opening in an intermediateflange, is progressively made ineffective'as the pressure of-the steam at the side of the higher pressure increases. For instance if the said spring be formed by a flat steel band the effective free length. of such steel band will be 4 spring shortened continuously or by steps as the steam-pressure increases," so that the. ath passed through by the said free end 0 the spring will correspondingly with the risin of e steam-pressure become shortened. his purpose is in case of the use of aflatsteel by p ns arranged in straight line side by side or in a circle, as shown in Fig. ,3, the

' free upper surfaces or ends of which pins .be-f ing cut ofi or adjusted insuch a manner that 1f the said spring is bent down or stretchedone pin after the other will come in contact with 3 shows a spring of as well as spiral spring, accomplished the adjacent portion of the spring, in this way, ndeed, making ineffective one part of the spring after the other, at the same time pro essively shortening the efiective length of t e spring and accordingl reducing the path described by the free on of the spring. t will be easily understood, also, that the athor' an lethrough which the indicatingever travels about its scale will be continuously shorter the more the pressure of steam pass' through the opening of said intermediate ange increases.

Figure 1 illustrates the flexion of a spring a, which flexion is e ual forevery unit of additional mass, and flexion is graphically illustrated 'as the straight line 0 in Fig. 4.

Fig. 2 shows theemployment of screws 6 as sto s. The increase spring is smaller than and not roportional to the increase of the mass. his effect is due to the stops 6, which are preferably capa-.

of the fiexion of the.

ble of being adjusted asdesired. The fiexion in thiscase is graphically illustrated by thecurve'd in Fig. 4. Fig. 2 shows a modi- -fication of the arrangement represented in Fig. 2. Instead of several stops b a single one is provided-for instance, in the form of a plate b, one edge of which is curved. Fig. another form with its steps b. Fig. 5 is a vertical section through a measuring a cordance with t e present invention.v

The tube a: connects that part of. the cylinder y above the bell-shaped piston w with the higher pressure of steam. Another tube 12 well as .with the lever t, the axle s ofwhich h the one vertical wall of the passes throng casing 1', the ottom of which forms the cover -of.the cylinder y. The spring a is securely clam ed between the strong metal pieces g, and represents the stops on which one art of thel spring after the: other .finds its a utparatus constructed in ac- I 9 connects the lower side of the cylinder y with c ment the more'the piston w decends under the pressure transmitted through the tube'w. It-is of course to be understoodthat oil or some other packing is interposed between the piston w and its walls. I

' It is to be remarked that an instrument, as shown in Fig. 5, can be used in measuringthe quantities'of steam, feeding a steam-eng ne when the latter isto be driven with difierent power or speed, the said intermediate flange .being then located within the main steampipe of said engine.

What I claim, and desire to secure by Letters Patent of the United States, is

1. In a gage for indicating volume measurements, a spring rigidly supported at one end, a piston rigidly connected to the other end of saidspring, a cylinder containing such piston, air-tight tubes connected to both ends of said cylinder, one of them leading fluid of high pressure against that side ofthe piston adjacent to the spring, while the other tube is adapted to lead fluid of lower pressure against the opposite side of the piston, a. plurality of stops arranged to engage the spring successively when the latter is deflected by the high pressure acting against said piston, as set forth.

2. In a-gage for indicatin volume measurements, a flat spring rigi y supported at one end, a piston rigidly connected to the other end of said spring, a cylinder containingsuch piston, air-tight tubes connected to both endsof said cylinder, one of them leading fluid of high pressure against that side of the piston adjacent to the spring, while the other tube is adapted to lead fluid of lower pressure against the opposite side of the piston, a plurality of stops arranged to engage the spring successively when the latter is deflected by the high pressure acting against said piston, as set forth.

3. In a gage for indicatingvolume'meas- I urements 'a spring, rigidly supported at one.

end, a piston rigidly connected to the other end of said spring, a cylinder containing such piston, air-tight tubes connected to the ends ed to lead fluid 0 of said cylinder, one of them adapted to lead fluid of high pressure against that side of the piston adjacent to the spring, while the other tube is adapted to lead fluid of lower pressure against the opposite side of the piston, a plurality of adjustable stops supporting the spring one'after the other when the latter is deflected by the high pressure acting against said piston, asset forth.

4. In a ga e for indicat' urements, a at spring rigi y supported at one end, a iston rigidly connected to the other end 0 said spring, a cylinder containing such piston, air-tight tubes connected to volume measthe ends of said cylinder, one of them adaptto the free end of -said spring, and means wherebya plurality ofadjustable abutments are successively presented to said spring when the same is flexed soas to gradually vary the resistance to flexion of its free end. In testimony whereof I have hereunto set my hand in the presence of two witnesses.

MAX GEHRE.

Witnesses: I I

WILLIAM ESSENWEIN, PETER LIEBER. 

